Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 33, Problem 15SP
ELECTRIC GENERATORS
A 75.0-kW, 230-V shunt generator has a generated emf of 243.5 V. If the field current is 12.5 A at rated output, what is the armature resistance?
A 75.0-kW, 230-V shunt generator has a generated emf of 243.5 V. If the field current is 12.5 A at rated output, what is the armature resistance?
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A moving coil ammeter gives a full scale deflection for a current i = 200 mA and its coil has a resistance RC = 1Ω. To increase the full scale deflection of this meter to 1A a shunt resistor, RSh is placed in parallel with the meter.
What is the value of the shunt resistor?
Select one:
a. 0.25 Ω
b. 1.0 Ω
c. 2.5 Ω
d. 0.025 Ω
75.0
2
30.0 Ω
ww
20.0
Ω
E=?
S
+
A
25.0 V
50.0
2
V
a) Use Kirchhoff's rules to show the loops and junctions.
b) Find the emf of the battery and reading of the ammeter.
c) What will the ammeter and voltmeter read when the switch is closed?
A 12.0-A current passes through a light bulb with a resistance of 20.0 Ω. How much energy will be dissipated in the tungsten filament after 10.0 minutes?
a.
1.73 MJ
b.
0.950 MJ
c.
1.37 MJ
d.
2.12 MJ
e.
1.12 MJ
Chapter 33 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
Ch. 33 - Prob. 12SPCh. 33 - ELECTRIC GENERATORS
33.13 [II] The emf induced in...Ch. 33 - ELECTRIC GENERATORS
33.14 [II] A dynamo...Ch. 33 - ELECTRIC GENERATORS
33.15 [II] A 75.0-kW, 230-V...Ch. 33 - ELECTRIC GENERATORS
33.16 [III] A 120-V generator...Ch. 33 - ELECTRIC MOTORS
33.17 [II] A generator has an...Ch. 33 - ELECTRIC MOTORS
33.19 [II] A shunt motor with...Ch. 33 - ELECTRIC MOTORS
33.20 [II] A shunt motor is...Ch. 33 - ELECTRIC MOTORS
33.21 [II] A shunt dynamo has an...Ch. 33 - ELECTRIC MOTORS
33.22 [II] A shunt motor has a...
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